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Botanica Marina

Editor-in-Chief: Dring, Matthew J.

6 Issues per year


IMPACT FACTOR 2017: 0.989
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1437-4323
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Volume 45, Issue 6

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Propagules of Alsidium corallinum (Rhodomelaceae, Rhodophyta)

E. Cecere / O. D. Saracino / A. Petrocelli
Published Online: 2005-06-01 | DOI: https://doi.org/10.1515/BOT.2002.062

Abstract

Alsidium corallinum C. Agardh from the Mar Grande of Taranto (Ionian Sea, Mediterranean Sea) reproduced primarily by propagules. These were starch-filled branchlets subtended by little-pigmented axes, which reached the maximum length of 6 mm with a diameter of about 300 μm. Propagules could both be branched up to three orders and form other propagules in their turn. On mature plants propagules originated by the transformation of the ultimate order branch whereas on over-wintering plants they derived from the transformation of lower order branches. On some individuals, some tetrasporangial branchlets grew as propagules after having formed a variable number of tetrasporangia. Some propagules also formed tetrasporangia. Generally, propagules detached above the little-pigmented axis which successively regenerated a new propagule. In the field, propagules settled on various substrata and propagule-derived plantlets were often observed. As the other species of Alsidium do not form propagules, propagule production by A. corallinum may be considered as a specific character.

About the article

Published Online: 2005-06-01

Published in Print: 2002-11-19


Citation Information: Botanica Marina, Volume 45, Issue 6, Pages 580–585, ISSN (Print) 0006-8055, DOI: https://doi.org/10.1515/BOT.2002.062.

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[1]
Milena Polifrone, Flora De Masi, and Gaetano M. Gargiulo
Aquaculture, 2006, Volume 261, Number 3, Page 1003
[2]
Ester Cecere, Antonella Petrocelli, and Marc Verlaque
Marine Ecology, 2011, Volume 32, Number 4, Page 419

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